This brass shaft sleeve adapts a 5/8" bore pulley with 3/16" key way to our 15 mm servo motor shaft with 5 mm key way. Photo 2 shows what comes in the box: Just one adapter, and one half key. All other photos are for reference only. Specifically designed to fit our strait shaft 2 HP servo motors to 5/8" shaft drives and pulleys.  

Part’s specification:

Sleeve inside diameter 15 mm

Sleeve outside diameter 5/8"

Sleeve length is about 43.5 mm +/- 2 mm

Sleeve Key way slot 5 mm

The key way is 5 X 3/16" half key. Key way length is apx 32 mm

These are hand made and will require patience to hand fit.

They fit tight and run true